78825380

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{18679}}^1$

素因数の和:18899

約数の個数: 24

約数和(自身を含む): 166326720

約数和(自身を除く): 87501340

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 18679, 37358, 74716, 93395, 186790, 373580, 3941269, 7882538, 15765076, 19706345, 39412690, 78825380]

約数ペア:

[(1, 78825380), (2, 39412690), (4, 19706345), (5, 15765076), (10, 7882538), (20, 3941269), (211, 373580), (422, 186790), (844, 93395), (1055, 74716), (2110, 37358), (4220, 18679)]